20046619 has 2 divisors, whose sum is σ = 20046620. Its totient is φ = 20046618.

The previous prime is 20046589. The next prime is 20046659. The reversal of 20046619 is 91664002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20046619 - 2⁹ = 20046107 is a prime.

It is a super-2 number, since 2×20046619² = 803733866662322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20046659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10023309 + 10023310.

It is an arithmetic number, because the mean of its divisors is an integer number (10023310).

Almost surely, 2^20046619 is an apocalyptic number.

20046619 is a deficient number, since it is larger than the sum of its proper divisors (1).

20046619 is an equidigital number, since it uses as much as digits as its factorization.

20046619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 20046619 is about 4477.3450838639. The cubic root of 20046619 is about 271.6525037259.

The spelling of 20046619 in words is "twenty million, forty-six thousand, six hundred nineteen".